Three years ago 96% of smartphone users were making at least one standard voice call a week, but now just three quarters do according to a new survey

More than three quarters (76%) of UK adults now own a smartphone, up from 52% in 2012. But the number of people using their phone to make voice calls is falling.

The share of device owners saying they make at least one voice call a week has dropped down from 96% to 75% over the past three years, according to research carried out by Ipsos Mori for Deloitte.